White ramus communicans

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White ramus communicans
Scheme showing structure of a typical spinal nerve. 1. Somatic efferent. 2. Somatic afferent. 3,4,5. Sympathetic efferent. 6,7. Sympathetic afferent.
Diagram of the course and branches of a typical intercostal nerve. (Rami communicantes labeled at center.)
Latin ramus communicans albus nervi spinalis
Gray's subject #208 920
Dorlands/Elsevier r_02/12689486

The thoracic, and the first and second lumbar nerves each contribute a branch, white ramus communicans to the adjoining sympathetic ganglion.

They contain myelinated preganglionic sympathetic fibers (GVE and GVA).

Unlike the gray variety, white rami communicantes do not extend below L3.[1]

Contents

Deep and superficial dissection of the lumbar plexus.

Thoracic portion of the sympathetic trunk.

  1. ^ Dissector Answers - Kidney & Retroperitoneum. Retrieved on 2007-11-13.

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v • d • e
Nerves - autonomic nervous system (sympathetic nervous system/ganglion/trunks and parasympathetic nervous system/ganglion)
Head/cranial Ciliary ganglion (Short ciliary nerves) - Pterygopalatine ganglion (Nerve of pterygoid canal) - Submandibular ganglion - Otic ganglion
Neck/cervical paravertebral ganglia: Cervical ganglia (Superior, Middle, Inferior) - Stellate ganglion
prevertebral plexus: Cavernous plexus - Internal carotid
Chest/thorax paravertebral ganglia: Thoracic ganglia

prevertebral plexus: Cardiac plexus - Esophageal plexus - Pulmonary plexus - Thoracic aortic plexus

splanchnic nerves: Thoracic splanchnic nerves

cardiac nerves: Superior - Middle - Inferior
Abdomen/Lumbar paravertebral ganglia: Lumbar ganglia

prevertebral ganglia: Celiac ganglia (Aorticorenal) - Superior mesenteric ganglion - Inferior mesenteric ganglion

prevertebral plexus: Celiac plexus - (Hepatic, Splenic, Pancreatic) - aorticorenal (Abdominal aortic plexus, Renal/Suprarenal) - Superior mesenteric (Gastric) - Inferior mesenteric (Spermatic, Ovarian) - Superior hypogastric (hypogastric nerve, Superior rectal) - Inferior hypogastric (Vesical, Prostatic/Cavernous nerves of penis, Uterovaginal, Middle rectal)

splanchnic nerves: Lumbar splanchnic nerves

enteric nervous system: Meissner's plexus • Auerbach's plexus
Pelvis/sacral paravertebral ganglia: Sacral ganglia - Ganglion impar
splanchnic nerves: Pelvic splanchnic nerves - Sacral splanchnic nerves
All Rami communicans (White, Gray) - Preganglionic fibers - Postganglionic fibers
v • d • e
Anatomy of torso (primarily): the spinal cord
Spinal nerve Dorsal (Root, Ganglion, Ramus) • Ventral (Root, Ramus) • Sympathetic trunk • rami communicantes (Gray, White)
Gray matter/Rexed laminae Posterior horn (Column of Clarke, Substantia gelatinosa of Rolando, Nucleus proprius) • Lateral horn • Anterior horn • Central canal/Substantia gelatinosa centralis
White matter: somatic/ascending (blue)
White matter: motor/descending (red)
Layers Epidural space • Dura mater • Subdural space • Arachnoid mater • Subarachnoid space • Pia mater
Other structures Denticulate ligaments • Conus medullaris • Cauda equina • Filum terminale • Cervical enlargement • Lumbar enlargement • Anterior median fissure
Retrieved from "http://en.wikipedia.org/wiki/White_ramus_communicans"
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